<html xmlns:wicket="http://wicket.apache.org/">
<body onload="document.getElementById('form').submit();return false;">
<form id="form" wicket:id="form" action="" method="POST">
  <input  wicket:id="url" type='hidden' name='url'/>
  <textarea  wicket:id="body" style='visibility:hidden' name='body'></textarea>
  <input  wicket:id="username" type='hidden' name='username' value=''/>
  <input  wicket:id="password" type='hidden' name='password' value=''/>
</form>
<div>
  <span><wicket:message key="loading">Loading...</wicket:message></span>
</div>
</body>
</html>